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Allow using StaticSpriteBatch for AutoTiling

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Ell 2021-11-27 14:27:56 +01:00
parent aa94217fc6
commit 5cb77be410
2 changed files with 45 additions and 18 deletions
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CHANGELOG.md
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@ -21,6 +21,7 @@ Improvements
- Exposed the epsilon value used by Camera
- Added Padding.Empty
- Throw an exception when text formatter macros resolve recursively too many times
- Allow using StaticSpriteBatch for AutoTiling
Fixes
- Fixed some end-of-line inconsistencies when using the Right text alignment

62
MLEM/Misc/AutoTiling.cs
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@ -5,6 +5,7 @@ namespace MLEM.Misc {
/// <summary>
/// This class contains a <see cref="DrawAutoTile"/> method that allows users to easily draw a tile with automatic connections.
/// For auto-tiling in this manner to work, auto-tiled textures have to be laid out in a format described in <see cref="DrawAutoTile"/>.
/// Note that <see cref="StaticSpriteBatch"/> can also be used for drawing by using the <see cref="AddAutoTile"/> method instead.
/// </summary>
public static class AutoTiling {
@ -12,28 +13,51 @@ namespace MLEM.Misc {
/// This method allows for a tiled texture to be drawn in an auto-tiling mode.
/// This allows, for example, a grass patch on a tilemap to have nice looking edges that transfer over into a path without any hard edges between tiles.
///
/// For auto-tiling in this way to work, the tiles have to be laid out in a specific order. This order is shown in the auto-tiling demo's textures.
/// For auto-tiling in this way to work, the tiles have to be laid out as follows: five tiles aligned horizontally within the texture file, with the following information:
/// <list type="number">
/// <item><description>The texture used for filling big areas</description></item>
/// <item><description>The texture used for straight, horizontal borders, with the borders facing away from the center</description></item>
/// <item><description>The texture used for outer corners, with the corners facing away from the center</description></item>
/// <item><description>The texture used for straight, vertical borders, with the borders facing away from the center</description></item>
/// <item><description>The texture used for inner corners, with the corners facing away from the center</description></item>
/// </list>
/// For more information and an example, see https://github.com/Ellpeck/MLEM/blob/main/Demos/AutoTilingDemo.cs#L20-L28.
/// </summary>
/// <param name="batch"></param>
/// <param name="pos"></param>
/// <param name="texture"></param>
/// <param name="textureRegion"></param>
/// <param name="connectsTo"></param>
/// <param name="color"></param>
/// <param name="rotation"></param>
/// <param name="origin"></param>
/// <param name="scale"></param>
/// <param name="layerDepth"></param>
public static void DrawAutoTile(SpriteBatch batch, Vector2 pos, Texture2D texture, Rectangle textureRegion, ConnectsTo connectsTo, Color color, float rotation = 0, Vector2? origin = null, Vector2? scale = null, float layerDepth = 0) {
var org = origin ?? Vector2.Zero;
/// <param name="batch">The sprite batch to use for drawing.</param>
/// <param name="pos">The position to draw at.</param>
/// <param name="texture">The texture to use for drawing.</param>
/// <param name="textureRegion">The location of the first texture region, as described in the summary.</param>
/// <param name="connectsTo">A function that determines whether two positions should connect.</param>
/// <param name="color">The color to draw with.</param>
/// <param name="origin">The origin to draw from.</param>
/// <param name="scale">The scale to draw with.</param>
/// <param name="layerDepth">The layer depth to draw with.</param>
public static void DrawAutoTile(SpriteBatch batch, Vector2 pos, Texture2D texture, Rectangle textureRegion, ConnectsTo connectsTo, Color color, Vector2? origin = null, Vector2? scale = null, float layerDepth = 0) {
var orig = origin ?? Vector2.Zero;
var sc = scale ?? Vector2.One;
var (p1, r1, p2, r2, p3, r3, p4, r4) = CalculateAutoTile(pos, textureRegion, connectsTo, sc);
batch.Draw(texture, p1, r1, color, 0, orig, sc, SpriteEffects.None, layerDepth);
batch.Draw(texture, p2, r2, color, 0, orig, sc, SpriteEffects.None, layerDepth);
batch.Draw(texture, p3, r3, color, 0, orig, sc, SpriteEffects.None, layerDepth);
batch.Draw(texture, p4, r4, color, 0, orig, sc, SpriteEffects.None, layerDepth);
}
/// <inheritdoc cref="DrawAutoTile"/>
public static void AddAutoTile(StaticSpriteBatch batch, Vector2 pos, Texture2D texture, Rectangle textureRegion, ConnectsTo connectsTo, Color color, float rotation = 0, Vector2? origin = null, Vector2? scale = null, float layerDepth = 0) {
var orig = origin ?? Vector2.Zero;
var sc = scale ?? Vector2.One;
var (p1, r1, p2, r2, p3, r3, p4, r4) = CalculateAutoTile(pos, textureRegion, connectsTo, sc);
batch.Add(texture, p1, r1, color, 0, orig, sc, SpriteEffects.None, layerDepth);
batch.Add(texture, p2, r2, color, 0, orig, sc, SpriteEffects.None, layerDepth);
batch.Add(texture, p3, r3, color, 0, orig, sc, SpriteEffects.None, layerDepth);
batch.Add(texture, p4, r4, color, 0, orig, sc, SpriteEffects.None, layerDepth);
}
private static (Vector2, Rectangle, Vector2, Rectangle, Vector2, Rectangle, Vector2, Rectangle) CalculateAutoTile(Vector2 pos, Rectangle textureRegion, ConnectsTo connectsTo, Vector2 scale) {
var up = connectsTo(0, -1);
var down = connectsTo(0, 1);
var left = connectsTo(-1, 0);
var right = connectsTo(1, 0);
var xUl = up && left ? connectsTo(-1, -1) ? 0 : 4 : left ? 1 : up ? 3 : 2;
var xUr = up && right ? connectsTo(1, -1) ? 0 : 4 : right ? 1 : up ? 3 : 2;
var xDl = down && left ? connectsTo(-1, 1) ? 0 : 4 : left ? 1 : down ? 3 : 2;
@ -41,10 +65,12 @@ namespace MLEM.Misc {
var (w, h) = textureRegion.Size;
var (w2, h2) = new Point(w / 2, h / 2);
batch.Draw(texture, new Vector2(pos.X, pos.Y), new Rectangle(textureRegion.X + 0 + xUl * w, textureRegion.Y + 0, w2, h2), color, rotation, org, sc, SpriteEffects.None, layerDepth);
batch.Draw(texture, new Vector2(pos.X + 0.5F * w * sc.X, pos.Y), new Rectangle(textureRegion.X + w2 + xUr * w, textureRegion.Y + 0, w2, h2), color, rotation, org, sc, SpriteEffects.None, layerDepth);
batch.Draw(texture, new Vector2(pos.X, pos.Y + 0.5F * h * sc.Y), new Rectangle(textureRegion.X + xDl * w, textureRegion.Y + h2, w2, h2), color, rotation, org, sc, SpriteEffects.None, layerDepth);
batch.Draw(texture, new Vector2(pos.X + 0.5F * w * sc.X, pos.Y + 0.5F * h * sc.Y), new Rectangle(textureRegion.X + w2 + xDr * w, textureRegion.Y + h2, w2, h2), color, rotation, org, sc, SpriteEffects.None, layerDepth);
return (
new Vector2(pos.X, pos.Y), new Rectangle(textureRegion.X + xUl * w, textureRegion.Y, w2, h2),
new Vector2(pos.X + w2 * scale.X, pos.Y), new Rectangle(textureRegion.X + w2 + xUr * w, textureRegion.Y, w2, h2),
new Vector2(pos.X, pos.Y + h2 * scale.Y), new Rectangle(textureRegion.X + xDl * w, textureRegion.Y + h2, w2, h2),
new Vector2(pos.X + w2 * scale.X, pos.Y + h2 * scale.Y), new Rectangle(textureRegion.X + w2 + xDr * w, textureRegion.Y + h2, w2, h2));
}
/// <summary>